Do RAG Systems Cover What Matters? Evaluating and Optimizing Responses with Sub-Question Coverage (2025.naacl-long)
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| Challenge: | Existing evaluations of retrieval-augmented generation systems are limited . sub-question coverage measures how well a RAG system addresses different facets of a question. |
| Approach: | They propose a framework for evaluation based on sub-question coverage . they propose to decompose questions into sub-questions and classify them into three types . |
| Outcome: | The proposed evaluation framework measures how well a RAG system addresses different facets of a question. |
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